NVD / CVE Program· CNA apache

CVE-2026-27446: Apache Artemis, Apache ActiveMQ Artemis: Auth bypass for Core downstream federation

Noroxi assessment

Priority: Plan (action score 40/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 11.4% (FIRST EPSS); higher than 96% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: org.apache.artemis:artemis-server (Maven) 2.52.0; eap7-activemq-artemis (Red Hat:jboss_enterprise_application_platform_els:7.4::el7) 0:2.16.0-22.redhat_00057.1.el7eap; eap7-activemq-artemis-cli (Red Hat:jboss_enterprise_application_platform_els:7.4::el7) 0:2.16.0-22.redhat_00057.1.el7eap.

Add it to your regular patch cycle. Upgrade to org.apache.artemis:artemis-server (Maven) 2.52.0; eap7-activemq-artemis (Red Hat:jboss_enterprise_application_platform_els:7.4::el7) 0:2.16.0-22.redhat_00057.1.el7eap; eap7-activemq-artemis-cli (Red Hat:jboss_enterprise_application_platform_els:7.4::el7) 0:2.16.0-22.redhat_00057.1.el7eap or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Missing Authentication for Critical Function (CWE-306) vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This could potentially result in message injection into any queue and/or message exfiltration from any queue via the rogue broker. This impacts environments that allow both: - incoming Core protocol connections from untrusted sources to the broker - outgoing Core protocol connections from the broker to untrusted targets This issue affects: - Apache Artemis from 2.50.0 through 2.51.0 - Apache ActiveMQ Artemis from 2.11.0 through 2.44.0. Users are recommended to upgrade to Apache Artemis version 2.52.0, which fixes the issue. The issue can be mitigated by one of the following: - Remove Core protocol support from any acceptor receiving connections from untrusted sources. Incoming Core protocol connections are supported by default via the "artemis" acceptor listening on port 61616. See the "protocols" URL parameter configured for the acceptor. An acceptor URL without this parameter supports all protocols by default, including Core. - Use two-way SSL (i.e. certificate-based authentication) in order to force every client to present the proper SSL certificate when establishing a connection before any message protocol handshake is attempted. This will prevent unauthenticated exploitation of this vulnerability. - Implement and deploy a Core interceptor to deny all Core downstream federation connect packets. Such packets have a type of (int) -16 or (byte) 0xfffffff0. Documentation for interceptors is available at https://artemis.apache.org/components/artemis/documentation/latest/intercepting-operations.html .

CriticalCVSS 9.3 · v4.0—No exploit Fix available

Published: Mar 4, 2026
Updated: Sep 18, 2026
EPSS: 11.4% · 96th percentile
CWE: CWE-306

Report tools

JSON

Action score

Plan

Add it to your regular patch cycle.

CVSS: 37 / 40 · 9.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 3 / 30 · 11.4%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · apache: 9.3; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

ProductVersion

Vendor	Product	CPE
apache	artemis	cpe:2.3:a:apache:artemis

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

apache artemis2.11.0 and later · up to 2.44.0 inclusive
apache artemis2.50.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.

Apache Software Foundation Apache ActiveMQ Artemis
- 2.11.0 and later · up to and including 2.44.0affected · semver
Apache Software Foundation Apache Artemis
- 2.50.0 and later · up to and including 2.51.0affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

+96

Same product

apache: all records

Other highest-scoring records for the same primary product.

CVE-2023-50780Apache ActiveMQ Artemis: Authenticated users could perform RCE via Jolokia MBeans
40Plan
CVE-2026-57967Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment
39Monitor
CVE-2026-67593Apache Artemis, Apache Artemis, Apache ActiveMQ Artemis, Apache ActiveMQ Artemis: Pre-authentication Openwire protocol handling can result in queue deletion
36Monitor

Published before and after this one in the same product

← EarlierCVE-2025-27427Apr 1, 2025 · Apache ActiveMQ Artemis: Address routing-type can be updated by user without the createAddress permission
9Monitor
← EarlierCVE-2025-27391Apr 9, 2025 · Apache ActiveMQ Artemis: Passwords leaking from broker properties in the debug log
27Monitor
Later →CVE-2026-32642Mar 24, 2026 · Apache Artemis, Apache ActiveMQ Artemis: Temporary address auto-created for OpenWire consumer without createAddress permission
9Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Maven:org.apache.artemis:artemis-server	2.52.0	Package registry (OSV)
red hat:eap8-activemq-artemis	0:2.40.0-6.redhat_00012.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-activemq-artemis-cli	0:2.40.0-6.redhat_00012.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-bouncycastle	0:1.84.0-1.redhat_00001.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-bouncycastle-jmail	0:1.84.0-1.redhat_00001.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-bouncycastle-pg	0:1.84.0-1.redhat_00001.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-bouncycastle-pkix	0:1.84.0-1.redhat_00001.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-bouncycastle-prov	0:1.84.0-1.redhat_00001.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-bouncycastle-util	0:1.84.0-1.redhat_00001.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-wildfly	0:8.1.6-5.GA_redhat_00007.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-wildfly-java-jdk17	0:8.1.6-5.GA_redhat_00007.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-wildfly-java-jdk21	0:8.1.6-5.GA_redhat_00007.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)
red hat:eap8-wildfly-modules	0:8.1.6-5.GA_redhat_00007.1.el8eap · Red Hat:jboss_enterprise_application_platform:8.1::el8	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days+1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Hardik Mehta <mehtahardik@proton.me>finder

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-57967190 days apartApache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment
39Monitor
CVE-2026-49364190 days apartApache Artemis, Apache Artemis, Apache ActiveMQ Artemis, Apache ActiveMQ Artemis: Pre-Authentication Cluster Credential Exposure to Discovered Peers
36Monitor
CVE-2026-67593190 days apartApache Artemis, Apache Artemis, Apache ActiveMQ Artemis, Apache ActiveMQ Artemis: Pre-authentication Openwire protocol handling can result in queue deletion
36Monitor
CVE-2026-49362190 days apartApache Artemis, Apache ActiveMQ Artemis: Missing Authentication in CORE Protocol Handler Allows Unauthorized Queue Creation
30Monitor
CVE-2026-49363190 days apartApache Artemis, Apache ActiveMQ Artemis: Pre-Authentication Information Disclosure in CORE Protocol Topology Subscription
30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-306 · Missing Authentication for Critical Function

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

The bug in code

The whole CWE-306 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1// Added for the support team
2app.post("/maintenance/reset", resetDevice);

Fixed

1if (config.maintenanceEnabled) {
2  app.post(
3    "/maintenance/reset",
4    requireSession, requireRole("admin"), resetDevice
5  );
6}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:47 PM UTC

For records you follow, these changes also arrive as notifications. →

References

bugzilla.redhat.com/show_bug.cgi?id=2444320

Show all references (15 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Ecosystem	Package	Affected range	Fix
Maven	org.apache.activemq:artemis-server	from 2.11.0 · up to and including 2.44.0	—
Maven	org.apache.artemis:artemis-server	from 2.50.0 · before 2.52.0	2.52.0
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-cli	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-commons	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-core-client	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-dto	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-hornetq-protocol	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-hqclient-protocol	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-jdbc-store	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-jms-client	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-jms-server	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-journal	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-ra	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-selector	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-server	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-service-extensions	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-activemq-artemis-tools	before 0:2.16.0-22.redhat_00057.1.el7eap	0:2.16.0-22.redhat_00057.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-glassfish-jsf	before 0:2.3.14-11.SP11_redhat_00001.1.el7eap	0:2.3.14-11.SP11_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-ironjacamar	before 0:1.5.26-2.Final_redhat_00001.1.el7eap	0:1.5.26-2.Final_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-ironjacamar-common-api	before 0:1.5.26-2.Final_redhat_00001.1.el7eap	0:1.5.26-2.Final_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-ironjacamar-common-impl	before 0:1.5.26-2.Final_redhat_00001.1.el7eap	0:1.5.26-2.Final_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-ironjacamar-common-spi	before 0:1.5.26-2.Final_redhat_00001.1.el7eap	0:1.5.26-2.Final_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7	eap7-ironjacamar-core-api	before 0:1.5.26-2.Final_redhat_00001.1.el7eap	0:1.5.26-2.Final_redhat_00001.1.el7eap